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Publication numberUS1199350 A
Publication typeGrant
Publication dateSep 26, 1916
Filing dateMay 14, 1913
Priority dateMay 14, 1913
Publication numberUS 1199350 A, US 1199350A, US-A-1199350, US1199350 A, US1199350A
InventorsGeorge W Collin
Original AssigneeCollin Valve Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1199350 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patented Sept. 26, 1916.




Specification of Letters Patent.

Patented Sept. 26, 1916.

Application filed May 14, 1913. Serial No. 767,585.

To all whom it may concern Be it known that l. (irnoron W. COLLIN,

' F airfield, and State of Connecticut, have invented certain new and useful Improvements in Strainers, of which the following is a specification.

My invention relates to improvements in strainers, and embodies improven'ients upon the strainer illustrated and described in my Patent No. 1,038,544 dated July 23, 1912. The strainer of that patent comprises a screen cylinder set within a chamber of a suitable body, said body having passages leading to and from such chamber and so arranged that the fluid to be strained passes into the interior of the strainer, and thence out through the perforations thereof into the said chamber and then out through the discharge passage of the said body. The invention herein described comprises means for cleaning the surfaces of the strainer, and other features all as hereinafter described and particularly pointed out in the appended claims. I I The object of my invention is to facilitate ithe cleaning of strainer cylinders and the ike.

I will now proceed to describe my invention with reference to the accompanying drawings, and will then point out the novel features in claims.

Figure 1 shows a central vertical section of a strainer embodying my invention.

Fig. 2 shows a transverse section of the screen cylinder showing-a top view of the sweep, a portion of this sweep being broken away. Fig. 3 shows a detail axial section of the sweep. Fig. 4 is a perspectiveview of the sweep, showing particularly the staggered arrangement of the notches of the sweep disks.

In the drawings, 10 designates the strainer body, 11 the inlet passage thereof and 12 the outlet passage thereof. strainer body there is a bridge 13 ported at the top for the reception of the screen cylinder 14. The body 10 has as a continuation of inlet passage 11, a passage '15 leading to the space above the bridge 13; and thescreen cylinder 1% extends through this space above the bridge 13, and is provided Within this der. The body 10 is provided with a cover 17, the screen cylinder fitting into a recess in that cover, and also being stepped in a corresponding recess in the bottom of the body 10. In the bottom of the body 10, a cleaning port 18 is provided, to which is connected a blow-off pipe 18 provided with a suitable valve 18'. This valve is preferably placed several feet from the body 10, the pipe 18 thereby affording a chamber to receive the heavier foreign matter separated from the fluid by the screen cylinder l-l.

Into the central opening of the cover-17 is screwed a stuiiing box 1!) through which passes the stem 20 of a sweep 21; and this stuiiing box is provided with suitable packby a screw cap 23. The sweep 21 comprises a plurality of disks 24 of a diameter suchthat they fit the inner surface of the screen cylinder 14 closely, these disks being notched at the edges, the notches of the different disks being staggered relatively, so that the projections of the one disk are over the notches of the other disk, as indicated particularly in Fig. 1. Since the disks are notched asshown, free flow of liquid past the disks-is permitted, even when the sweep is in an intermediate position, as shown in Fig. 1; though in practice aml except when the screen cylinder is being cleaned out by the sweep, said sweep will be drawn up to the extreme top of the screen cylinder, and will be held there by a clamping collar 25 provided with a set screw 26 whereby the collar may be clamped to any portion of the sweep stem 20.

The operation of the strainer is as follows: Normally, the sweep 21 being at the top of the screen cylinder 14, the fluid to be screened enters the admission passage 11 and, passing through passage 15, enters the ports 16 of the screen cylinder, and thence passes down through said screen cylinder and out through the perforations thereof into the chamber 27 and thence into the outlet passage 12. To clean the screen, the set screw 26 of the clamping collar 14 is loosened and said collar is moved to the top of the stem and there fastened, and then the sweep is moved up and down in the screen cylinder, whereby material adhering to the inner surface of the screen cylinder is scraped therefrom and caused to fall into theblowoff pi )e 18. The stem 20 is then raised to the fu 1 height and clamped in that position by means of the clamping collar 25, and at a suitable time the solid matter in pipe 18' is blown out by opening valve 18*.

As shown particularly in Fig. 3, the sweep 21 comprises a bushing 28 mounted upon the end of the stem 20, a nut 29, and spacing rings 30 which space the disks 24 apart; these disks being mounted upon the bushing 28. A pin 31 holds the disks 24 in proper relative position, so that the notches of the disks are always staggered. There may be few or many of these sweep disks 24. In the particular construction shown two of these disks are provided, but this number may be greater. I have found. phosphor-bronze a very suitable material for these disks.

\Vhat I claim is 1. A strainer comprising abody having within it a screen chamber and another chamber separated from the screen chamber by a perforate wall, said body having also inlet and outlet connections, one connected to the screen chamber and the other to such other chamber, a screen cylinder extending through said chambers and through the perforation in said wall separating said chambers, the portion ofsaid screen cylinder lying within said screen chamber having screen openings, the portion of said screen cylinder lying Within such other chamber having flow ports, a sweep within said screen cylinder and movable longitudinally therein and arranged to be guided thereby, and

means for moving said sweep.

2. A strainer comprising in combination a body and a screen cylinder therein, a portion of said cylinder provided with screen holes, said body provided with passages for the flow of liquid into said screen and out through said holes, and a sweep mounted within said screen cylinder and arranged to move longitudinally therein, said-body having a space, out of the line of flow, into which the sweep may bewithdrawn, and a cylinder Within such space and forming an extension of the screen cylinder, said screen cylinder and extension forming a guide for the sweep.

3. A strainer comprising in combination a body and a screen cylinder therein, a portion of said cylinder provided with screen holes, said body provided with passages for the flow of liquid into said screen and out through said 'holes, and a sweep mounted within said screen cylinder and arranged to move longitudinally therein, said cylinder provided with a portion, beyond the screening portion thereof, into which said sweep may be drawn.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.





Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2678732 *Jun 8, 1949May 18, 1954Banks JohnFluid strainer
US4081171 *Jun 7, 1976Mar 28, 1978Clemar Manufacturing CorporationSelf-cleaning filter assembly for solenoid-actuated valves
US4360037 *Jan 5, 1981Nov 23, 1982Anthony Manufacturing Corp.Self-cleaning filter assembly for solenoid-actuated valve
US4419238 *Jul 2, 1982Dec 6, 1983Lindeman (Holdings) LimitedJuice drainer
US5198111 *Jan 10, 1991Mar 30, 1993Delaware Capital Formation, Inc.Filter with reciprocating cleaner unit
US5527462 *Nov 15, 1994Jun 18, 1996Delaware Capital Formation, Inc.Filter with axially movable wiper
US5569383 *Dec 15, 1994Oct 29, 1996Delaware Capital Formation, Inc.Filter with axially and rotatably movable wiper
US5954961 *Oct 29, 1996Sep 21, 1999Carchidi; Joseph E.Bone particle collection apparatus and method
US6475397 *Nov 27, 2000Nov 5, 2002Mepsco, Inc.Method and means for filter back flushing
US6637452 *Oct 8, 2002Oct 28, 2003Fisher Controls International, Inc.Valve with self-cleaning trim
US8828223May 13, 2008Sep 9, 2014Pitco Frialator, Inc.Continuously operating filtering apparatus
US9327218 *Apr 5, 2012May 3, 2016Georg Schunemann GmbhBernoulli filter
US9532681Sep 8, 2014Jan 3, 2017Pitco Frialator, Inc.Continuously operating filtering apparatus
US20120255915 *Apr 5, 2012Oct 11, 2012Georg Schunemann GmbhBernoulli filter
WO2010026476A3 *Sep 4, 2009Apr 22, 2010Fomat S.R.L.Method and device for cleaning a filter for fluids
U.S. Classification210/414, 210/457, 137/244, 210/437, 210/453
Cooperative ClassificationB01D29/05